Siemens SENTRON 3WL10 - Page 121

Mutual mechanical interlocking ①
With the interlocking devices, two circuit breakers can be mutually interlocked. The
interlocking device only ever releases one circuit breaker at a time, thereby ensuring that
only the released circuit breaker can be operated. The other circuit breaker remains in the
safe OPEN position and is blocked by the interlocking mechanism.
Both horizontally and vertically oriented circuit breakers can be mutually mechanically
interlocked.
Maximum distances between circuit breakers:
• Horizontal: max. 2000mm
• Vertical: max. 1000mm
Mechanical interlocks prevent more than one of a number of mutually interlocked circuit
breakers from being in the CLOSED position at the same time. However, all circuit breakers
can be in the OPEN breaker position at the same time.
The following interlock combinations are possible:
• Fixed-mounted breaker - 󹪝xed-mounted breaker
• Fixed-mounted breaker - withdrawable breaker
• Withdrawable breaker - withdrawable breaker
Fixed-mounted
To mount the modules on a 󹪝xed-mounted breaker, the side wall must be modi󹪝ed so that
the main contact position can be mechanically transmitted to the interlocking module. It
is important whether the circuit breaker is mounted on the wall or on the 󹪞oor. In one
case (wall mounting), the modi󹪝cation must be made to the side part; in the other (󹪞oor
mounting), the base support must be modi󹪝ed. The necessary modi󹪝cation is made in the
factory before delivery for the con󹪝guration ordered by the customer. This requires the
correct article number.
Description Version Article number Modi󹪝cation in the fac‐
tory with option
Mounting support
standard (circuit breaker
feet) for mounting the
circuit breaker on the
󹪞oor.
Fixed-mounted breaker
󹪞oor mounting
(without externally
mounted interlocking
module)
3VW9011-0BB51 A06
Mounting support ex‐
tended (circuit breaker
feet); kit incl. mechani‐
cal transmission of
switch position on cir‐
cuit breaker side wall
Fixed-mounted breaker
󹪞oor mounting
(with externally moun‐
ted interlocking mod‐
ule)
3VW9011-0BB52 S56
Side wall extension kit,
modi󹪝cation for me‐
chanical switch position
transmission on circuit
breaker side wall
Fixed-mounted breaker
wall mounting
(with externally moun‐
ted interlocking mod‐
ule)
3VW9011-0BB53 S57
Accessories
3.5External accessories
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
120 Equipment Manual, 10/2023, L1V30499596002-03